Improvement in scaffolds



UNITED STATES PATENT OFFICE,

JOHN EEDIOK, OE BUTLER, OHIO.

IMPROVEMENT IN SC-AFFOLDS.

Specification forming part of Letters Patent No. 118,553, dated August29, 1871.

To all whom it may concern:

Be it known that I, JOHN REDIOK, of Butler, in the county of Richlandand State of Ohio,

have invented a new and Improved Scaold5.

improved scaffold. Fig. 2 is a top view, partly in section, of the same.

Similar letters of reference indicate correspond ing parts.

This invention relates to a new builders scaffold, which is soconstructed as to be easily taken apart and conveyed from one buildin gto another, put up in a short time, and constructed at a less cost thanthe Ordinary scaffold now in use. My invention consists in theimprovements in scaffolds, as hereinafter fully described andsubsequently pointed out in the claim.

A A in the drawing are the four posts or uprghts of my improvedscaifold. They are, on the long sides, connected by braces B B, whichare secured by bolts or screws and placed diagonally and crossing eachother, as shown. At the ends the scaffold has braces C C, which it intothe grooved edges of the uprights and are fastened by means of pins a a.The uprights are grooved throughout their lengths and perforated atshort intervals, as shown, so that the braces U can be set higher Orlower, as may be desired. For extending the scaftold vertically .theuprights are spliced, as shown at b b in Fig. l. D D are cross-bars,held in the uprights A by pins c c, at the ends of the scaffold, thepins being put through apertures so that they support, not pass through,the bars D. By means of vertical rods d el., which are shown by dottedlines in Fig. l, the ends of the bars D are connected with jointedlevers E, which rest on pins e across the ends of the scaffold. Byswinging down the jointed middle portions of the levers E their endswill be elevated to raise the platform. In this manner the same can beelevated by the persons on the platform.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The loosely-supported cross-bars D, vertical rods d,and jointed levers E, when combined with and applied to uprights A, asand for the purpose specified.

JOHN REDIGK. Witnesses:

GEORGE SEcErsT, DANIEL LoosE.

